<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Local</title>
</head>
<body>
<h2>LocalStorage</h2>
<button onclick="saveData()">点我保存一个数据</button>
<button onclick="readData()">点我读取一个数据</button>
<button onclick="deleteData()">点我删除一个数据</button>
<button onclick="deleteAllData()">点我删除一个数据</button>
<script type="text/javascript">
    function saveData(){
    let p ={name:'张三',age:18}
    window.localStorage.setItem('msg','hello')
    window.localStorage.setItem('person',JSON.stringify(p))
    }
    function readData(){
        console.log(localStorage.getItem('msg'))
        const  res =localStorage.getItem('person')
        console.log(JSON.parse(res))
    }
    function deleteData(){
        localStorage.removeItem('msg')
    }
    function deleteAllData(){
        localStorage.clear()
    }
</script>
</body>

</html>